Eccentric shaft clamp capable of adjusting eccentricity

Abstract

The utility model relates to the technical field of machining, in particular to an eccentric shaft clamp capable of adjusting eccentricity, which comprises a fixed disc, the right side of the fixed disc is fixedly connected with a mounting seat, the right side of the mounting seat is provided with a moving groove, an inner cavity of the moving groove is provided with a moving seat, and the right side of the moving seat is provided with a fastening mechanism. Two sets of sliding grooves are formed in the inner cavity wall of the moving groove, sliding blocks and two sets of springs are arranged in inner cavities of the sliding grooves, when the position of a workpiece is adjusted, the position of a moving base in the moving groove is adjusted through cooperation of an adjusting block in an adjusting groove and an adjusting rod, so that the eccentricity meets the machining requirement, a limiting rotary knob is tightened, and the limiting rotary knob is directly loosened after machining; and under the action of the sliding block in the sliding groove and the spring on the outer ring of the sliding rod, the movable seat automatically resets, subsequent machining of workpieces with other eccentricity requirements is facilitated, and the problem that an existing eccentric shaft clamp is difficult to quickly adjust and restore the positions of the workpieces is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to an eccentric shaft clamp with adjustable eccentricity. Background Art

[0002] Eccentric shaft. The eccentric shaft is usually fixed on the rotating shaft of the motor through an eccentric hole, and performs cam motion when the motor starts. Therefore, it is widely used in automobiles, engines, pumps, etc.

[0003] The patent with publication number CN213195689U discloses an eccentric shaft clamp, which includes a turntable with a connecting flange, a mounting block arranged on the turntable, a socket provided on the mounting block for inserting a workpiece, and a locking mechanism arranged on the mounting block for locking the workpiece. The device eliminates the operation of installing a gasket by the staff, and the staff can adjust the eccentricity required for processing the eccentric shaft only by rotating the threaded rod, thereby improving the clamping efficiency of the eccentric shaft. However, the device has the problem that after the workpiece is fixed, the eccentricity needs to be adjusted with a hand crank, and the position of the workpiece in the mounting block in the slide groove is adjusted under the action of the threaded rod. When the slider needs to be reset to the initial position after the workpiece is processed, the threaded rod still needs to be continuously rotated, resulting in cumbersome and complicated adjustment and reset process. For this reason, an eccentric shaft clamp with adjustable eccentricity is proposed to solve the problem that the existing eccentric shaft clamp is difficult to quickly adjust and restore the workpiece position. Utility Model Content

[0004] (I) Technical problems to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides an eccentric shaft clamp with adjustable eccentricity, which solves the technical problem that the prior eccentric shaft clamp is difficult to quickly adjust and restore the position of a workpiece.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] An eccentric shaft clamp with adjustable eccentricity comprises a fixed plate, a mounting seat is fixedly connected to the right side of the fixed plate, a movable groove is opened on the right side of the mounting seat, a movable seat is arranged in the inner cavity of the movable groove, a fastening mechanism is arranged on the right side of the movable seat, two groups of slide grooves are opened on the inner cavity wall of the movable groove, a slider and two groups of springs are arranged in the inner cavity of the slide groove, a slide rod is fixedly connected to the inner cavity of the slide groove, adjusting rods are arranged at both ends of the movable seat, an adjusting groove is opened on the right side of the mounting seat, an adjusting block is arranged in the middle of the inner cavity of the adjusting groove and is fixedly connected to the end of the adjusting rod, and a limit knob is arranged on the right side of the adjusting block;

[0009] Among them, the slider is fixedly connected to the moving seat, and the spring is sleeved on the sliding rod, the two groups of springs are distributed at both ends of the slider, the adjusting rod passes through the adjusting slot and is fixedly connected to the adjusting block, a threaded rod is provided on one side of the limit knob, and passes through the limit knob, and a center line is provided on the top of the moving seat.

[0010] Preferably: the fastening mechanism is composed of a fixing seat, a fastening clamping plate, a fastening groove, a fastening block, a screw hole, and a screw rod, and a driving mechanism is arranged on the top of the fastening mechanism;

[0011] Wherein, the inner cavity of the fixing seat is provided with two groups of fastening clamps which are axially symmetrically distributed up and down, and the fastening clamps are arc-shaped.

[0012] Preferably: the fastening grooves are provided at both ends of the fixing seat and communicate with the inner cavity thereof, and the inner cavity of the fastening grooves is provided with two sets of fastening blocks;

[0013] Wherein, the two groups of fastening blocks are fixedly connected to the fastening clamps symmetrically arranged above and below.

[0014] Preferably: a screw hole is formed through the top of the fastening block, and a screw rod is provided in the inner cavity of the screw hole;

[0015] Wherein, the screw rod passes through the inner wall of the fastening groove and the fixing seat and can rotate but cannot move up and down.

[0016] Preferably: the driving mechanism is composed of a driven gear, a driving gear and a knob;

[0017] The driving gear is installed at the middle position of the top of the fixing seat by means of a knob, and two driven gears are symmetrically meshed at both ends, and the driven gear is fixedly connected to the screw rod.

[0018] Preferably: a scale is provided on the right side of the mounting seat;

[0019] Wherein, the zero scale line of the scale is located in the middle and is aligned with the center line of the fixing seat.

[0020] (III) Beneficial effects

[0021] 1. When adjusting the position of the workpiece, use the adjusting block in the adjusting slot and the adjusting rod to adjust the position of the moving seat in the moving slot so that the eccentricity meets the processing requirements, tighten the limit knob, and directly loosen the limit knob after processing. Using the slider in the slide slot and the spring of the outer ring of the slide rod, the moving seat resets itself, which is convenient for subsequent use of workpieces with other eccentricity requirements, solving the problem that the existing eccentric shaft fixture is difficult to quickly adjust and restore the workpiece position.

[0022] Second, place one end of the workpiece between two sets of fastening clamps, use the knob in the driving mechanism to drive the active gear together with the driven gear and the screw to rotate, cooperate with the screw hole and the fastening block in the fastening groove to drive the fastening clamp to move to the middle to clamp the workpiece, thereby achieving the purpose of convenient fixing according to the size of the processed workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0024] Figure 1 This is the structural diagram of the utility model;

[0025] Figure 2 The utility model structure Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a cross-sectional view of the structure of the utility model;

[0027] Figure 4 It is a schematic diagram of the structural fastening mechanism of the utility model.

[0028] Legend: 1. Fixed plate; 2. Mounting seat; 3. Moving slot; 4. Moving seat; 5. Fastening mechanism; 51. Fixed seat; 52. Fastening splint; 53. Fastening slot; 54. Fastening block; 55. Screw hole; 56. Screw rod; 6. Slider; 7. Sliding rod; 8. Spring; 9. Adjusting rod; 10. Adjusting slot; 11. Adjusting block; 12. Limit knob; 13. Scale; 14. Driving mechanism; 141. Driven gear; 142. Driving gear; 143. Knob; 15. Slide slot. DETAILED DESCRIPTION

[0029] The embodiment of the present application effectively solves the problem that the existing eccentric shaft clamp is difficult to quickly adjust and restore the workpiece position by providing an eccentric shaft clamp with adjustable eccentricity. When adjusting the workpiece position, the position of the movable seat in the movable slot is adjusted by using the adjusting block in the adjusting slot in conjunction with the adjusting rod so that the eccentricity meets the processing requirements. The limit knob is tightened and the limit knob is directly loosened after processing. The movable seat resets itself under the action of the slider in the slide slot and the spring of the outer ring of the slide rod, which is convenient for subsequent use in processing workpieces with other eccentricity requirements.

[0030] Example

[0031] The technical solution in the embodiment of the present application effectively solves the technical problem that the existing eccentric shaft fixture is difficult to quickly adjust and restore the workpiece position. The overall idea is as follows:

[0032] In view of the problems existing in the prior art, the utility model provides an eccentric shaft clamp with adjustable eccentricity, comprising a fixed plate 1, a mounting seat 2 is fixedly connected to the right side of the fixed plate 1, a moving groove 3 is opened on the right side of the mounting seat 2, a moving seat 4 is arranged in the inner cavity of the moving groove 3, a fastening mechanism 5 is arranged on the right side of the moving seat 4, two groups of slide grooves 15 are opened on the inner cavity wall of the moving groove 3, a slider 6 and two groups of springs 8 are arranged in the inner cavity of the slide groove 15, a slide rod 7 is fixedly connected to the inner cavity of the slide groove 15, adjusting rods 9 are arranged at both ends of the moving seat 4, an adjusting groove 10 is opened on the right side of the mounting seat 2, an adjusting block 11 is arranged in the middle of the inner cavity of the adjusting groove 10, and It is fixedly connected to the end of the adjusting rod 9, and a limit knob 12 is arranged on the right side of the adjusting block 11. After the workpiece is fixed by the fastening mechanism 5, when the workpiece position needs to be adjusted, the adjusting block 11 in the adjusting groove 10 can be used to cooperate with the adjusting rod 9 to adjust the position of the moving seat 4 in the moving groove 3 so that the eccentricity meets the processing requirements, and the limit knob 12 is tightened. After processing, the limit knob 12 is directly loosened, and the moving seat 4 is reset by itself under the action of the slider 6 in the slide groove 15 and the spring 8 on the outer ring of the slide rod 7, which is convenient for the subsequent use of workpieces with other eccentricity requirements, thereby solving the problem that the existing eccentric shaft fixture is difficult to quickly adjust and restore the workpiece position;

[0033] Among them, the slider 6 is fixedly connected to the moving seat 4, and is mounted on the slide rod 7 with the spring 8. Two groups of springs 8 are distributed at both ends of the slider 6. The adjusting rod 9 passes through the adjusting slot 10 and is fixedly connected to the adjusting block 11. A threaded rod is provided on one side of the limit knob 12 and passes through the limit knob 12. A center line is provided on the top of the moving seat 4.

[0034] The fastening mechanism 5 is composed of a fixing seat 51, a fastening clamping plate 52, a fastening groove 53, a fastening block 54, a screw hole 55, and a screw rod 56. The top of the fastening mechanism 5 is provided with a driving mechanism 14; wherein, the inner cavity of the fixing seat 51 is provided with two groups of fastening clamping plates 52 and are axially symmetrically distributed up and down, and the fastening clamping plates 52 are arc-shaped; the fastening groove 53 is provided at both ends of the fixing seat 51 and is interconnected with its inner cavity, and the inner cavity of the fastening groove 53 is provided with two groups of fastening blocks 54; wherein, the two groups of fastening blocks 54 are fixedly connected with the upper and lower symmetrical fastening clamping plates 52, and a screw hole 55 is provided through the top of the fastening block 54, and a screw rod 56 is provided in the inner cavity of the screw hole 55; wherein, the screw rod 56 penetrates the inner wall of the fastening groove 53 and the fixing seat 51 and can be The driving mechanism 14 is composed of a driven gear 141, a driving gear 142 and a knob 143; the driving gear 142 is installed at the top middle position of the fixed seat 51 by means of the knob 143, and two driven gears 141 are symmetrically meshed at both ends, and the driven gear 141 is fixedly connected to the screw 56. One end of the workpiece to be processed is placed between the two sets of fastening clamps 52, and the knob 143 in the driving mechanism 14 is used to drive the driving gear 142, the driven gear 141 and the screw 56 to rotate, and the fastening block 54 in the screw hole 55 and the fastening groove 53 is cooperated to drive the fastening clamp 52 to move to the middle to clamp the workpiece, thereby achieving the purpose of convenient fixing according to the size of the processed workpiece.

[0035] A scale 13 is provided on the right side of the mounting seat 2; wherein the zero scale line of the scale 13 is located in the middle and aligned with the center line of the fixed seat 51. When the position of the movable seat 4 is adjusted by using the adjustment block 11 and the adjustment rod 9, the movement of the movable seat 4 can be accurately controlled under the action of the scale 13 and the center line, that is, the accuracy of the eccentricity is ensured.

[0036] Working principle: When using this eccentric shaft clamp with adjustable eccentricity, use the fixed plate 1 to fix the clamp on the machine tool spindle. After the workpiece is fixed by the fastening mechanism 5, when the workpiece position needs to be adjusted, the adjusting block 11 in the adjusting groove 10 can be used in conjunction with the adjusting rod 9 to adjust the position of the moving seat 4 in the moving groove 3 so that the eccentricity meets the processing requirements, tighten the limit knob 12, and directly loosen the limit knob 12 after processing. Under the action of the slider 6 in the slide groove 15 and the spring 8 on the outer ring of the slide rod 7, the moving seat 4 resets itself, which is convenient for the subsequent use of workpieces with other eccentricity requirements, solving the problem that the existing eccentric shaft clamp is difficult to quickly adjust and restore the workpiece position.

[0037] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. An eccentric shaft fixture with adjustable eccentricity, comprising a fixing plate (1), characterized in that: The right side of the fixed plate (1) is fixedly connected with a mounting seat (2), the right side of the mounting seat (2) is provided with a moving groove (3), the inner cavity of the moving groove (3) is provided with a moving seat (4), the right side of the moving seat (4) is provided with a fastening mechanism (5), the inner cavity wall of the moving groove (3) is provided with two groups of sliding grooves (15), the inner cavity of the sliding groove (15) is provided with a slider (6) and two groups of springs (8), the inner cavity of the sliding groove (15) is fixedly connected with a sliding rod (7), both ends of the moving seat (4) are provided with an adjusting rod (9), the right side of the mounting seat (2) is provided with an adjusting groove (10), the middle part of the inner cavity of the adjusting groove (10) is provided with an adjusting block (11) and is fixedly connected to the end of the adjusting rod (9), and the right side of the adjusting block (11) is provided with a limit knob (12); The slider (6) is fixedly connected to the movable seat (4) and is sleeved on the slide rod (7) with the spring (8). Two groups of the springs (8) are distributed at both ends of the slider (6). The adjustment rod (9) passes through the adjustment slot (10) and is fixedly connected to the adjustment block (11). A threaded rod is provided on one side of the limit knob (12) and passes through the limit knob (12). A center line is provided on the top of the movable seat (4).

2. The eccentric shaft fixture with adjustable eccentricity as claimed in claim 1, characterized in that: The fastening mechanism (5) is composed of a fixing seat (51), a fastening clamping plate (52), a fastening groove (53), a fastening block (54), a screw hole (55), and a screw rod (56), and a driving mechanism (14) is arranged on the top of the fastening mechanism (5); The inner cavity of the fixing seat (51) is provided with two groups of fastening clamps (52) which are axially symmetrically distributed up and down, and the fastening clamps (52) are arc-shaped.

3. An eccentric shaft fixture with adjustable eccentricity as claimed in claim 2, characterized in that: The fastening grooves (53) are provided at both ends of the fixing seat (51) and are in communication with the inner cavity thereof, and the inner cavity of the fastening grooves (53) is provided with two groups of fastening blocks (54); Wherein, the two groups of fastening blocks (54) are fixedly connected to the fastening clamps (52) symmetrically arranged above and below.

4. The eccentric shaft fixture with adjustable eccentricity as claimed in claim 2, characterized in that: A screw hole (55) is formed through the top of the fastening block (54), and a screw rod (56) is disposed in the inner cavity of the screw hole (55); The screw rod (56) penetrates the inner wall of the fastening groove (53) and the fixing seat (51) and can rotate but cannot move up and down.

5. The eccentric shaft fixture with adjustable eccentricity as claimed in claim 2, characterized in that: The driving mechanism (14) is composed of a driven gear (141), a driving gear (142) and a knob (143); The driving gear (142) is installed at the top middle position of the fixing seat (51) by means of a knob (143), and two driven gears (141) are symmetrically meshed at both ends, and the driven gear (141) is fixedly connected to the screw rod (56).

6. The eccentric shaft fixture with adjustable eccentricity as claimed in claim 1, characterized in that: A scale (13) is provided on the right side of the mounting seat (2); The zero scale line of the scale (13) is located in the middle and is aligned with the center line of the fixing seat (51).

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